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Fouling Factor Formula

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Fouling Factor represents the theoretical resistance to heat flow due to the buildup of a fouling layer on the tube surfaces of the heat exchanger. Check FAQs

R f = (\frac{1}{U d}) - (\frac{1}{U})

R_f - Fouling Factor?U_d - Overall Heat Transfer Coefficient after Fouling?U - Overall Heat Transfer Coefficient?

Fouling Factor Example

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Here is how the Fouling Factor equation looks like with Values.

Here is how the Fouling Factor equation looks like with Units.

Here is how the Fouling Factor equation looks like.

1.0006 = (\frac{1}{0.975}) - (\frac{1}{40})

1.0006m²K/W = (\frac{1}{0.975W/m²*K}) - (\frac{1}{40W/m²*K})

1.0006 = (\frac{1}{0.975}) - (\frac{1}{40})

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Fouling Factor Solution

Follow our step by step solution on how to calculate Fouling Factor?

FIRST Step Consider the formula

R f = (\frac{1}{U d}) - (\frac{1}{U})

Next Step Substitute values of Variables

∴

R f = (\frac{1}{0.975W/m²*K}) - (\frac{1}{40W/m²*K})

Next Step Prepare to Evaluate

∴

R f = (\frac{1}{0.975}) - (\frac{1}{40})

Next Step Evaluate

∴

R f = 1.00064102564103m²K/W

LAST Step Rounding Answer

∴

R f = 1.0006m²K/W

Fouling Factor Formula Elements

Variables

Fouling Factor

Fouling Factor represents the theoretical resistance to heat flow due to the buildup of a fouling layer on the tube surfaces of the heat exchanger.

Symbol: R_f

Measurement: Fouling FactorUnit: m²K/W

Note: Value should be greater than 0.

Formulas to find Fouling Factor

Overall Heat Transfer Coefficient after Fouling

Overall Heat Transfer Coefficient after Fouling is defined as the overall HT Coefficient of uncleaned heat exchanger after fouling has occured in it.

Symbol: U_d

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Overall Heat Transfer Coefficient after Fouling

Overall Heat Transfer Coefficient

The Overall Heat Transfer Coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.

Symbol: U

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Overall Heat Transfer Coefficient

Other formulas in Heat Exchanger category

Go Capacity Rate

C = ṁ \cdot c

Go Heat Transfer in Heat Exchanger given Cold Fluid Properties

Q = mod \underset{̲}{u} s (m c \cdot c c \cdot (T ci - T co))

Go Heat Transfer in Heat Exchanger given Hot Fluid Properties

Q = m h \cdot c h \cdot (T hi - T ho)

Go Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient

Q = U \cdot A \cdot ΔT m

How to Evaluate Fouling Factor?

Fouling Factor evaluator uses Fouling Factor = (1/Overall Heat Transfer Coefficient after Fouling)-(1/Overall Heat Transfer Coefficient) to evaluate the Fouling Factor, The Fouling Factor formula is defined as the difference of the reciprocal of overall HT coefficient after fouling and before fouling. Fouling Factor is denoted by R_f symbol.

How to evaluate Fouling Factor using this online evaluator? To use this online evaluator for Fouling Factor, enter Overall Heat Transfer Coefficient after Fouling (U_d) & Overall Heat Transfer Coefficient (U) and hit the calculate button.

FAQs on Fouling Factor

What is the formula to find Fouling Factor?

The formula of Fouling Factor is expressed as Fouling Factor = (1/Overall Heat Transfer Coefficient after Fouling)-(1/Overall Heat Transfer Coefficient). Here is an example- 1.000641 = (1/0.975)-(1/40).

How to calculate Fouling Factor?

With Overall Heat Transfer Coefficient after Fouling (U_d) & Overall Heat Transfer Coefficient (U) we can find Fouling Factor using the formula - Fouling Factor = (1/Overall Heat Transfer Coefficient after Fouling)-(1/Overall Heat Transfer Coefficient).

Can the Fouling Factor be negative?

No, the Fouling Factor, measured in Fouling Factor cannot be negative.

Which unit is used to measure Fouling Factor?

Fouling Factor is usually measured using the Square Meter Kelvin per Watt[m²K/W] for Fouling Factor. are the few other units in which Fouling Factor can be measured.

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Fouling Factor Formula

Fouling Factor Example

Fouling Factor Solution

Fouling Factor Formula Elements

Other formulas in Heat Exchanger category

How to Evaluate Fouling Factor?

FAQs on Fouling Factor

Variable Name